Liner for centrifugal cream-separators.



G. H. HAGKETT & TL W.'MORGAN. LINER FOR OENTRIFUGAL CREAM SEPARATORS APPLIOATICN FILED NOV-2, 1907.

Patented Mar. 9,1909.

WITNESSES:

ATTORN .y

UNITED STATES PATENT curios.

CHARLES H. HAOKETT AND. THOMAS W. MORGAN, OFWATERLOO, IOWA, ASSIGNORS-TO WILBUR W. MARSH, or WATERLOO, IOWA.

LINER on GENTRIFUGAL cnnm-snrnnnrons.

Specification of Letters Patent.

Patented March 9, 1909.

Application filed Novemlur 2, 1907. Serial No. 400,403.

the object of our invention is to perfect the action of that class of liners which consist of a vertical series of superimposed separated hollow frusta by modifying the form of the frusta so as to afford more clearance space between their inner edges; for the inward movement of the cream therebetween and thus obviate any chance of the cream coagulating in the inner zone of the liner between the frusta at com aratively low temperatures. This object we ave accomplished by. the means which are hereinafter described and claimed, and which are illustrated in the accompanying drawing, in which the figure is a central vertical axial section of the liner of a centrifugal cream separator, composed of our improved frustal baffling annuli.

.The liner shown, is composed of a vertical series pf separated hollow frusta a, super- -impose' d"'upon one another, their central openings in alinement and all concentric-to a common axis. The frusta are designed to intersect both the outer and the neutral zones of the bowl and extend nearly to the cream zone, enough space, however, being left between the cream zone and the inner edges d of the frusta to ermit a current of the full milk to pass tlierebetween to be 40 sprayed by centrifugal force between the frusta of the lineriand against the baffling surfaces of the frusta, the so arated cream seeking the axis and the s immed milk moving between the parallel portions 1) of the frusta to escape at their outer edges.

It will be observed that the outer ortion b of each frustum for approximately twothirds of the length of the frustum is formed as a portion of the surface of a cone, which 5 causes these portions to lie in a parallel rela tion to each other. By this arrangement the frusta can be closely piled to ether in the bowl, so as to leave but a sm ll inters'pace between any two frusta, the result being that a maximum amount of baffling surfaces may Our invention relates to improvements in i experimentally demonstrated that an interspace in the outer zone of the liner of no more than one thousandth of an inch in height is of most efiiciency in separating the minuter globules of cream from the. nearly stripped milk in that zone. While it is necessary for said purpose to crowd closely together the outer portions of the frusta, it is equally necessary to provide ample inters aces between the ortions thereof forming t ieir innermost third This is for the reason that itis in the inner zone of the liner adjacent to the so-called cream zone that thereater proportion of the cream is separated from the ful milk. In this region, therefore, greater clearance space is demanded between the frusta, that the cream may find easy vent to move to the cream zone. were placed to be very close together in this region, cream, which coagulates on a slight lowerin of the normal temperature, would be crowded into a given space, for it has been If the frusta soon, w 1en the temperature dropped at any time, fill the narrow interspaces with a clotted mass and stop the operation of the bowl. Our invention is thus designed to subserve both said purposes erfectly, the gradual inward curvature of-tfie inmost third of each frustum causes the interspaces c between the frusta to increase inheight as shown and give proper clearance to the cream in the region Where it forms a largeproportion of the full milk, and in the outer zone where the milk passes outward betweenthe frusta nearly strip ed of cream, the frusta in their outer two t iirds be'come parallel and baflie the milk Without being clogged up by the small proportion of cream globules in that location stripped from the milk by the nearly to progressively diverge from each other. 1 A liner for a centrifugal cream sepa- 1 rator, composed of a'plurality of super1m-- I posed hollow frusta intersecting the outer and neutral zones of the bowl, spaced apart iparallel to each other in their outer and medial zones, and curved inwardly in their leading from the outer zone of the bowl toinner zone to gradually increase the distance Ward its axis. of their separation from each other in a di- Signed at Waterloo, Iowa, this 30th day of rectioX f 10m tiheir outer tpfinnier edges. Oct. 1907.

5 3. liner or a cent 'uga cream se arator, 1composed of a plurality of ho ow l frusta spaced apart, parallel in their outer v portions and having their, inner portions Witnesses:

ormed and arranged relatively to each other G. G; KENNEDY, 10 as 'to diverge from each other in a direction I O. D. YOUNG. 

